Computer security

• The protection of
computer based resources
against unauthorized use or
natural disaster is known
as Security.

It defines the rights of the
individual users or organizations to keep their
personal data and information
Most of the damages
of data is caused by errors and
omissions. An organization always
needs accurate data for
transaction processing, providing
better service and making

A dishonest
programmer can easily any
software or data, if proper control
measures are not provided to the
system.
When the computer
resources can be misused
for unauthorized or illegal
function.
Fire and natural disaster like
floods , storms, snow-storms ,
lightning etc…

:-
The unauthorized modification of
data by dishonest employees of the
organization.

The special routines of a program .it
check whether the program is
performing correctly or not. It
do not have regular control
mechanisms and passwords. It is
use only when the normal
functioning of the software is
disturbed or stopped .

The special routines that
causes excessive damage
to the data or vital
program.
To get into someone
else’s computer system
without permission in
order to find out
information or do

Unauthorized copying of
confidential data from
hard disk to floppy
disks , which cannot be
detected by security
persons.

Monitoring of data
transmissions which are
meant for other persons.
refers to setting up a special
transmission path for
diverting the flow of data.

Unauthorized copying
of
data and programs
from all over the world
Illegal copying of
software's for the
purpose of distribution

It includes safeguards
against damage of
hardware's, software's and
data due to the physical
environment of the pc.

-
i.Using Password
ii.Fingerprints
iii.Keys
iv.Restricted
System

The access to various
computer resources by
authorized users must be
properly controlled.Examination of the
system (Application software) where
the program are working or not.

Encryption refers
to encode data
by converting the
standard data
code into
proprietary code.


• Security is critical for
maintaining the integrity of data
stored on the network servers.
 Login and Password Security
 Account Security
 Access Right
 Information about group to which the
user belongs.

The contingency measures
that an organization must
take to recover the data in
case it is damaged.
It is the most
efficient method of disaster
recovery. It is a duplicate copies
of important data and software.
Standards of moral
conduct to be followed by
employees for using various

Computer security

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